正则表达式小脚本的详细介绍
该小脚本实现的是对输入框内容中取出<img>标签中的src中的内容，然后在原来位置进行替换内容，然后在去除输入内容中的html标签，空格等操作
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<script>
window.onload = function () {
var target = document.getElementById("div1");
var but = document.getElementById("but");
var value;
but.onclick = function () {
value = target.innerHTML;
result = dealText(value);
alert(result);
};
};
function dealText(msg) {
var text1 = imageRound(msg);
var text2 = removeTag(text1);
var text3 = removeBlank(text2);
var text4 = changeNBSP(text3);
return text4;
}
function DealNum(num) {
var content = [];
for (var i = 0; i < num.length; i++) {
//
content.push(defaultSrc(num[i]));
}
return content;
}
function defaultSrc(src) {
return ':avator:';
}
function returnValue(srcValue) {
var num = [];
var pattern = /([^\/]+)\./;
var src;
for (var i = 0; i < srcValue.length; i++) {
src = pattern.exec(srcValue[i])[1];
num.push(src);
}
// alert(num);
var source = DealNum(num);
return source;
}
function imageRound(text) {
var reg2 = /<img.*?\>/gi;
var s = text.match(reg2);
var num = returnValue(s);
var i = 0;
var content = text.replace(reg2, function () {
return num[i++];
});
return content;
}
function removeTag(text) {
var text1;
var reg = /<.*?>|<.*?\/>/g;
text1 = text.replace(reg, "");
return text1;
}
function removeBlank(text) {
var text1;
var reg = /\s+/g;
text1 = text.replace(reg, "");
return text1;
}
function changeNBSP(text) {
var text1;
var reg = / /g;
var reg1 = /\;/g;
text1 = text.replace(reg, ' ');
text1 = text1.replace(reg1, "");
return text1;
}
</script>
</head>
<body>
<div contenteditable="true" id="div1">abc efg <img src="asdjk/123.jpg"/><span>hi gk</span><img
src="ahdkh/124.jpg"/>
<div>lmnop</div>
q rst uvw
</div>
<button id="but">更新</button>
</body>
</html>
本文地址：http://www.45fan.com/bcdm/86404.html