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<!doctype html>
<html>
<head>
<link rel="stylesheet" href="../api_static/tomorrow-night.css">
<link rel="stylesheet" href="../api_static/style.css" type="text/css">
<script src="../api_static//highlight.pack.js"></script>
<script src="../api_static//script.js"></script>
<script>hljs.initHighlightingOnLoad();</script><meta charset="utf-8">
<link rel="previous" href="Js_re.html">
<link rel="next" href="Js_typed_array.html">
<title>Js_string</title>
</head>
<body>
<nav class="module-index"><ul><li><a href="Bs.html">Bs</a></li>
<li><a href="Bs_dyn.html">Bs_dyn</a></li>
<li><a href="Bs_dyn_lib.html">Bs_dyn_lib</a></li>
<li><a href="Dom.html">Dom</a></li>
<li><a href="Js.html">Js</a></li>
<li><a href="Js_array.html">Js_array</a></li>
<li><a href="Js_boolean.html">Js_boolean</a></li>
<li><a href="Js_cast.html">Js_cast</a></li>
<li><a href="Js_date.html">Js_date</a></li>
<li><a href="Js_dict.html">Js_dict</a></li>
<li><a href="Js_exn.html">Js_exn</a></li>
<li><a href="Js_float.html">Js_float</a></li>
<li><a href="Js_global.html">Js_global</a></li>
<li><a href="Js_int.html">Js_int</a></li>
<li><a href="Js_int64.html">Js_int64</a></li>
<li><a href="Js_json.html">Js_json</a></li>
<li><a href="Js_math.html">Js_math</a></li>
<li><a href="Js_nativeint.html">Js_nativeint</a></li>
<li><a href="Js_null.html">Js_null</a></li>
<li><a href="Js_null_undefined.html">Js_null_undefined</a></li>
<li><a href="Js_obj.html">Js_obj</a></li>
<li><a href="Js_primitive.html">Js_primitive</a></li>
<li><a href="Js_promise.html">Js_promise</a></li>
<li><a href="Js_re.html">Js_re</a></li>
<li><a href="Js_string.html">Js_string</a></li>
<li><a href="Js_typed_array.html">Js_typed_array</a></li>
<li><a href="Js_types.html">Js_types</a></li>
<li><a href="Js_undefined.html">Js_undefined</a></li>
<li><a href="Js_unsafe.html">Js_unsafe</a></li>
<li><a href="Node.html">Node</a></li>
<li><a href="Node_buffer.html">Node_buffer</a></li>
<li><a href="Node_child_process.html">Node_child_process</a></li>
<li><a href="Node_fs.html">Node_fs</a></li>
<li><a href="Node_module.html">Node_module</a></li>
<li><a href="Node_path.html">Node_path</a></li>
<li><a href="Node_process.html">Node_process</a></li></ul></nav>
<div class="navbar"><a class="pre" href="Js_re.html" title="Js_re">Previous</a>
<a class="up" href="index.html" title="Index">Up</a>
<a class="post" href="Js_typed_array.html" title="Js_typed_array">Next</a>
</div>
<h1>Module <a href="type_Js_string.html">Js_string</a></h1>
<pre><span class="keyword">module</span> Js_string: <code class="code">sig</code> <a href="Js_string.html">..</a> <code class="code">end</code></pre><div class="info module top">
<div class="not-examples">
JavaScript String API<br>
</div>
<div class="examples">
</div>
</div>
<hr width="100%">
<div class="type-declaration">
<pre><span id="TYPEt"><span class="keyword">type</span> <code class="type"></code>t</span> = <code class="type">string</code> </pre>
</div>
<pre><span id="VALmake"><span class="keyword">val</span> make</span> : <code class="type">'a -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALfromCharCode"><span class="keyword">val</span> fromCharCode</span> : <code class="type">int -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALfromCharCodeMany"><span class="keyword">val</span> fromCharCodeMany</span> : <code class="type">int array -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALfromCodePoint"><span class="keyword">val</span> fromCodePoint</span> : <code class="type">int -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALfromCodePointMany"><span class="keyword">val</span> fromCodePointMany</span> : <code class="type">int array -> <a href="Js_string.html#TYPEt">t</a></code></pre><div class="info ">
<div class="not-examples">
ES2015<br>
</div>
<div class="examples">
</div>
</div>
<br>
ES2015<br>
<pre><span id="VALlength"><span class="keyword">val</span> length</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> int</code></pre>
<pre><span id="VALget"><span class="keyword">val</span> get</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> int -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALcharAt"><span class="keyword">val</span> charAt</span> : <code class="type">int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALcharCodeAt"><span class="keyword">val</span> charCodeAt</span> : <code class="type">int -> <a href="Js_string.html#TYPEt">t</a> -> float</code></pre>
<pre><span id="VALcodePointAt"><span class="keyword">val</span> codePointAt</span> : <code class="type">int -> <a href="Js_string.html#TYPEt">t</a> -> int option</code></pre><div class="info ">
<div class="not-examples">
type it as <code class="code">float</code> due to that it may return NAN
different from <code class="code">charCodeAt</code>
<pre class="codepre"><code class="code"> "\u{01003f}".charCodeAt(0) - 55296
"\u{01003f}".codePointAt(0) - 65599
</code></pre><br>
</div>
<div class="examples">
</div>
</div>
<br>
ES2015<br>
<pre><span id="VALconcat"><span class="keyword">val</span> concat</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALconcatMany"><span class="keyword">val</span> concatMany</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> array -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALendsWith"><span class="keyword">val</span> endsWith</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> bool</code></pre>
<pre><span id="VALendsWithFrom"><span class="keyword">val</span> endsWithFrom</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> int -> <a href="Js_string.html#TYPEt">t</a> -> bool</code></pre><div class="info ">
<div class="not-examples">
ES2015<br>
</div>
<div class="examples">
</div>
</div>
<br>
ES2015<br>
<pre><span id="VALincludes"><span class="keyword">val</span> includes</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> bool</code></pre>
<pre><span id="VALincludesFrom"><span class="keyword">val</span> includesFrom</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> int -> <a href="Js_string.html#TYPEt">t</a> -> bool</code></pre><div class="info ">
<div class="not-examples">
ES2015<br>
</div>
<div class="examples">
</div>
</div>
<br>
ES2015<br>
<pre><span id="VALindexOf"><span class="keyword">val</span> indexOf</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> int</code></pre>
<pre><span id="VALindexOfFrom"><span class="keyword">val</span> indexOfFrom</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> int -> <a href="Js_string.html#TYPEt">t</a> -> int</code></pre>
<pre><span id="VALlastIndexOf"><span class="keyword">val</span> lastIndexOf</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> int</code></pre>
<pre><span id="VALlastIndexOfFrom"><span class="keyword">val</span> lastIndexOfFrom</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> int -> <a href="Js_string.html#TYPEt">t</a> -> int</code></pre>
<pre><span id="VALlocaleCompare"><span class="keyword">val</span> localeCompare</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> float</code></pre>
<pre><span id="VALmatch_"><span class="keyword">val</span> match_</span> : <code class="type"><a href="Js_re.html#TYPEt">Js_re.t</a> -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> array option</code></pre>
<pre><span id="VALnormalize"><span class="keyword">val</span> normalize</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALnormalizeByForm"><span class="keyword">val</span> normalizeByForm</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre><div class="info ">
<div class="not-examples">
ES2015<br>
</div>
<div class="examples">
</div>
</div>
<br>
ES2015<br>
<pre><span id="VALrepeat"><span class="keyword">val</span> repeat</span> : <code class="type">int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre><br>
ES2015<br>
<pre><span id="VALreplace"><span class="keyword">val</span> replace</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALreplaceByRe"><span class="keyword">val</span> replaceByRe</span> : <code class="type"><a href="Js_re.html#TYPEt">Js_re.t</a> -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALunsafeReplaceBy0"><span class="keyword">val</span> unsafeReplaceBy0</span> : <code class="type"><a href="Js_re.html#TYPEt">Js_re.t</a> -><br> (<a href="Js_string.html#TYPEt">t</a> -> int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a>) -><br> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre><div class="info ">
<div class="not-examples">
returns a new string with some or all matches of a pattern replaced by the
value returned from the given function<br>
<div class="tag"><b>See also</b> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace#Specifying_a_function_as_a_parameter">MDN</a><br>
</div></div>
<div class="examples">
<pre class="example"><pre class="codepre"><code class="code">let str = "hello world!"
let re = [%re "/hello/g"]
let replaced = Js.String.unsafeReplaceBy0 re (fun match offset whole -> "hi")
let () = Js.log replaced (* prints "hi world!" *)
</code></pre></pre></div>
</div>
<pre><span id="VALunsafeReplaceBy1"><span class="keyword">val</span> unsafeReplaceBy1</span> : <code class="type"><a href="Js_re.html#TYPEt">Js_re.t</a> -><br> (<a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a>) -><br> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre><div class="info ">
<div class="not-examples">
returns a new string with some or all matches of a pattern replaced by the
value returned from the given function<br>
<div class="tag"><b>See also</b> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace#Specifying_a_function_as_a_parameter">MDN</a><br>
</div></div>
<div class="examples">
<pre class="example"><pre class="codepre"><code class="code">let str = "hello world!"
let re = [%re "/hello/g"]
let replaced = Js.String.unsafeReplaceBy1 re (fun match p1 offset whole -> "hi")
let () = Js.log replaced (* prints "hi world!" *)
</code></pre></pre></div>
</div>
<pre><span id="VALunsafeReplaceBy2"><span class="keyword">val</span> unsafeReplaceBy2</span> : <code class="type"><a href="Js_re.html#TYPEt">Js_re.t</a> -><br> (<a href="Js_string.html#TYPEt">t</a> -><br> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a>) -><br> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre><div class="info ">
<div class="not-examples">
returns a new string with some or all matches of a pattern replaced by the
value returned from the given function<br>
<div class="tag"><b>See also</b> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace#Specifying_a_function_as_a_parameter">MDN</a><br>
</div></div>
<div class="examples">
<pre class="example"><pre class="codepre"><code class="code">let str = "hello world!"
let re = [%re "/hello/g"]
let replaced = Js.String.unsafeReplaceBy2 re (fun match p1 p2 offset whole -> "hi")
let () = Js.log replaced (* prints "hi world!" *)
</code></pre></pre></div>
</div>
<pre><span id="VALunsafeReplaceBy3"><span class="keyword">val</span> unsafeReplaceBy3</span> : <code class="type"><a href="Js_re.html#TYPEt">Js_re.t</a> -><br> (<a href="Js_string.html#TYPEt">t</a> -><br> <a href="Js_string.html#TYPEt">t</a> -><br> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a>) -><br> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre><div class="info ">
<div class="not-examples">
returns a new string with some or all matches of a pattern replaced by the
value returned from the given function<br>
<div class="tag"><b>See also</b> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace#Specifying_a_function_as_a_parameter">MDN</a><br>
</div></div>
<div class="examples">
<pre class="example"><pre class="codepre"><code class="code">let str = "hello world!"
let re = [%re "/hello/g"]
let replaced = Js.String.unsafeReplaceBy3 re (fun match p1 p2 p3 offset whole -> "hi")
let () = Js.log replaced (* prints "hi world!" *)
</code></pre></pre></div>
</div>
<pre><span id="VALsearch"><span class="keyword">val</span> search</span> : <code class="type"><a href="Js_re.html#TYPEt">Js_re.t</a> -> <a href="Js_string.html#TYPEt">t</a> -> int</code></pre>
<pre><span id="VALslice"><span class="keyword">val</span> slice</span> : <code class="type">from:int -> to_:int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALsliceToEnd"><span class="keyword">val</span> sliceToEnd</span> : <code class="type">from:int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALsplit"><span class="keyword">val</span> split</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> array</code></pre>
<pre><span id="VALsplitAtMost"><span class="keyword">val</span> splitAtMost</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> limit:int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> array</code></pre>
<pre><span id="VALsplitLimited"><span class="keyword">val</span> splitLimited</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> array</code></pre>
<pre><span id="VALsplitByRe"><span class="keyword">val</span> splitByRe</span> : <code class="type"><a href="Js_re.html#TYPEt">Js_re.t</a> -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> array</code></pre>
<pre><span id="VALsplitByReAtMost"><span class="keyword">val</span> splitByReAtMost</span> : <code class="type"><a href="Js_re.html#TYPEt">Js_re.t</a> -> limit:int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> array</code></pre>
<pre><span id="VALsplitRegexpLimited"><span class="keyword">val</span> splitRegexpLimited</span> : <code class="type"><a href="Js_re.html#TYPEt">Js_re.t</a> -> int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> array</code></pre>
<pre><span id="VALstartsWith"><span class="keyword">val</span> startsWith</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> bool</code></pre>
<pre><span id="VALstartsWithFrom"><span class="keyword">val</span> startsWithFrom</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> int -> <a href="Js_string.html#TYPEt">t</a> -> bool</code></pre><div class="info ">
<div class="not-examples">
ES2015<br>
</div>
<div class="examples">
</div>
</div>
<br>
ES2015<br>
<pre><span id="VALsubstr"><span class="keyword">val</span> substr</span> : <code class="type">from:int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALsubstrAtMost"><span class="keyword">val</span> substrAtMost</span> : <code class="type">from:int -> length:int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALsubstring"><span class="keyword">val</span> substring</span> : <code class="type">from:int -> to_:int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALsubstringToEnd"><span class="keyword">val</span> substringToEnd</span> : <code class="type">from:int -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALtoLowerCase"><span class="keyword">val</span> toLowerCase</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALtoLocaleLowerCase"><span class="keyword">val</span> toLocaleLowerCase</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALtoUpperCase"><span class="keyword">val</span> toUpperCase</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALtoLocaleUpperCase"><span class="keyword">val</span> toLocaleUpperCase</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALtrim"><span class="keyword">val</span> trim</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALanchor"><span class="keyword">val</span> anchor</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre>
<pre><span id="VALlink"><span class="keyword">val</span> link</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a></code></pre><div class="info ">
<div class="not-examples">
ES2015<br>
</div>
<div class="examples">
</div>
</div>
<br>
ES2015<br>
<pre><span id="VALcastToArrayLike"><span class="keyword">val</span> castToArrayLike</span> : <code class="type"><a href="Js_string.html#TYPEt">t</a> -> <a href="Js_string.html#TYPEt">t</a> <a href="Js_array.html#TYPEarray_like">Js_array.array_like</a></code></pre></body></html>